package net.begincode.SSO.util;

import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Utils {
	/**
	 * 
	 */
	public static String md5(String plainText) {
		byte[] secretBytes = null;
		try {
			secretBytes = MessageDigest.getInstance("md5").digest(plainText.getBytes("UTF-8"));
		} catch (NoSuchAlgorithmException e) {
			throw new RuntimeException("没有响应的MD5算法");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		String md5code = new BigInteger(1, secretBytes).toString(16);// 
		for (int i = 0; i < 32 - md5code.length(); i++) {
			md5code = "0" + md5code;
		}
		return md5code;
	}
	
	 public static String convertMD5(String inStr) {
	        char[] a = inStr.toCharArray();
	        for (int i = 0; i < a.length; i++) {
	            a[i] = (char) (a[i] ^ 't');
	        }
	        String s = new String(a);
	        return s;
	    }

	public static void main(String[] args) {
		System.out.println(md5("123"));
	}

}
